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JCO:奥拉帕尼联用紫杉醇治疗胃癌增加总生存率

2015-10-10 赵洲 译 MedSci原创

 胃癌细胞株,尤其是那些共济失调毛细管扩张突变(ATM)水平较低的对ADP核糖聚合酶抑制剂奥拉帕尼敏感。ATM是DNA损伤响应的一个关键激活物。目前,胃癌是世界第三大癌症。复发性或转移性胃癌的五年生存率低于20%,目前一线疗法是基于氟尿嘧啶和顺铂联用的化疗,治疗方案比较有限。紫杉醇是在一线治疗失败后被广泛使用的二线药物。单用紫杉醇药效较差,为此研究人员考虑联用奥拉帕尼来提高临床治疗效果。

胃癌细胞株对奥拉帕尼(ADP核糖聚合酶抑制剂)敏感,尤其是那些共济失调毛细血管扩张突变基因(ATM)水平较低的。ATM是DNA损伤响应的一个关键激活物。

目前,胃癌是世界第三大癌症。复发性或转移性胃癌的五年生存率低于20%,目前胃癌的一线疗法是基于氟尿嘧啶和顺铂联用的化疗,总的治疗方案比较有限。紫杉醇是在一线治疗失败后被广泛使用的二线药物。单用紫杉醇疗效较差,为此研究人员考虑联用奥拉帕尼来提高临床治疗效果。研究人员对比了单用紫杉醇和奥拉帕尼联用紫杉醇治疗复发性或转移性胃癌的效果以及评价低ATM表达是否是奥拉帕尼或紫杉醇提高临床结果的预测指标。
 
在此次双盲的临床二期试验中,共有123名病人参与。患者被随机分为两组奥拉帕尼/紫杉醇组,n=61;安慰剂/紫杉醇,n=62。服药剂量为口服奥拉帕尼100mg片剂、每日两次,紫杉醇为注射给药,每28天为一个周期,每个周期的第1、8、15天给与80mg/m2的剂量。随后单用奥拉帕尼(每天两次,每次200mg)或安慰剂进行单独用药化疗。主要结束点为无进展生存率。受试者中有50%的ATM水平低或检测不到。
 
研究结果表明,奥拉帕尼联用紫杉醇并没有显著提升无进展生存率。但是,两药联用显著改善了总的生存率。此外,两药联用耐受性较好,没有预料之外的安全问题。这说明奥拉帕尼联用紫杉醇治疗转移性胃癌是有效的,在ATM低的人群中效果更明显目前三期临床仍在进行中。

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    2016-04-20 lidong40
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    2015-10-12 Jianghuiqin

    期待结果!

    0

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    2015-10-11 hlycom3356

    感谢作者分享

    0

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